A Study of Analytical Solar Radiation Pressure Modeling for BeiDou Navigation Satellites Based on RayTracing Method

摘要

Based on the characteristics of the Beidou navigation satellites, this paper introduce a RayTracking analytical solar radiation pressure modeling method which scatters the incident sunlights into a beam array, tracks the solar pressure of every discrete beam generated by reflection of satellite surface, superimposes the radiation pressures of all the discrete beams and gives an accurate solar radiation pressure model with analytical expressions using Fourier analysis. Considering the mutual occlusions of different parts of the satellite surface and the effect of sunlight beams reflected repeatedly by the satellite surface, this method can be used in solar radiation pressure modeling of satellites with complex surface structures. This paper also analyzes the effects of characteristics of satellite attitude and optical properties of the surface, then establishes an analytical solar radiation pressure model for BeiDou IGSO navigation satellites. With a unified form of expressions in the states of dynamic yaw control and zero yaw control of satellite attitude, this model can be used in orbital determination analysis in the period of crossing dynamic yaw and zero yaw control.